Lua tables help

[Bindie]

Hey, if I got a table like:

Code: Select all

Map[1] = {x=0,y=1, variables = {1,2,3}}

and then for some reason I want to add lots of variables:

Code: Select all

Map[1].tile = 24
Map[1].AnimTable = {}
Map[1].Treasure = 42

But I want a more effective way, not including Map[1] in every line.

Is there a syntax?

[Muris]

snip

Assuming you cannot set the values during the creation of map[1] such as:

Code: Select all

Map[1] = 
{
  x=0,
  y=1, 
  variables = {1,2,3},
  tile = 24,
  AnimTable = {},
  Treasure = 42
}

You could create local variable and set it to point same table

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local a = Map[1]
a.tile = 24
a.AnimTable = {}
a.Treasure = 42

If you want to add them into every single table inside Map, then

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for i,v in pairs( Map )
  if type( v ) == "table" then
    v.tile = 24
    v.AnimTable = {}
    v.Treasure = 42
  end
end

If you need to add them into every single subtable of a subtable in Map, you'd need to use recursion or probably coroutines, which could be done with something along the lines of:

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local Map = { 
  [1] = {},
  [2] = { [1] = {} }
}

local function iterateTable( t, func ) 
  if type(t) == "table" then
	  for i,v in pairs(t) do
  	  iterateTable( v, func )
  	end
 	  func(t)
  end
end

iterateTable( Map, function(t) 
    t.tile = 24
    t.AnimTable = {}
    t.Treasure = 42
	end )

[Bindie]

Awesome. Thanks.

[kikito]

This is the shortest one without adding a new function:

Code: Select all

local m = Map[1]
m.tile = 24
m.AnimTable = {}
m.Treasure = 42

EDIT: Apparently I was ninja'd by an answer and a "thank you" post. This looked empty when I pressed "submit", I swear.